1 /* GStreamer

     2  * Copyright (C) <2007> Sebastian Dröge <slomo@circular-chaos.org>

     3  *

     4  * This library is free software; you can redistribute it and/or

     5  * modify it under the terms of the GNU Library General Public

     6  * License as published by the Free Software Foundation; either

     7  * version 2 of the License, or (at your option) any later version.

     8  *

     9  * This library is distributed in the hope that it will be useful,

    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    12  * Library General Public License for more details.

    13  *

    14  * You should have received a copy of the GNU Library General Public

    15  * License along with this library; if not, write to the

    16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

    17  * Boston, MA 02111-1307, USA.

    18  */

    19 

    20 #ifndef __GST_FFT_S16_H__

    21 #define __GST_FFT_S16_H__

    22 

    23 #include <glib.h>

    24 #include <gst/gst.h>

    25 

    26 #include "gstfft.h"

    27 

    28 typedef struct _GstFFTS16 GstFFTS16;

    29 typedef struct _GstFFTS16Complex GstFFTS16Complex;

    30 

    31 /**

    32  * GstFFTS16:

    33  *

    34  * Instance structure for #GstFFTS16.

    35  *

    36  */

    37 struct _GstFFTS16 {

    38   /* <private> */

    39   void *cfg;

    40   gboolean inverse;

    41   gint len;

    42   gpointer _padding[GST_PADDING];

    43 };

    44 

    45 /* Copy of kiss_fft_s16_cpx for documentation reasons,

    46  * do NOT change! */

    47 

    48 /**

    49  * GstFFTS16Complex:

    50  * @r: Real part

    51  * @i: Imaginary part

    52  *

    53  * Data type for complex numbers composed of

    54  * signed 16 bit integers.

    55  *

    56  */

    57 struct _GstFFTS16Complex

    58 {

    59   gint16 r;

    60   gint16 i;

    61 };

    62 

    63 /* Functions */

    64 #ifdef __SYMBIAN32__

    65 IMPORT_C

    66 #endif

    67 

    68 

    69 GstFFTS16 * gst_fft_s16_new (gint len, gboolean inverse);

    70 #ifdef __SYMBIAN32__

    71 IMPORT_C

    72 #endif

    73 

    74 void gst_fft_s16_fft (GstFFTS16 *self, const gint16 *timedata, GstFFTS16Complex *freqdata);

    75 #ifdef __SYMBIAN32__

    76 IMPORT_C

    77 #endif

    78 

    79 void gst_fft_s16_inverse_fft (GstFFTS16 *self, const GstFFTS16Complex *freqdata, gint16 *timedata);

    80 #ifdef __SYMBIAN32__

    81 IMPORT_C

    82 #endif

    83 

    84 void gst_fft_s16_free (GstFFTS16 *self);

    85 #ifdef __SYMBIAN32__

    86 IMPORT_C

    87 #endif

    88 

    89 

    90 void gst_fft_s16_window (GstFFTS16 *self, gint16 *timedata, GstFFTWindow window);

    91 #endif /* __GST_FFT_S16_H__ */